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(born 1934). Half a century after Mexico’s popular president Lazaro Cardenas nationalized the oil industry and redistributed land to peasants, his son Cuauhtemoc withdrew from the party Lazaro had helped to create. Cuauhtemoc, named for the last Aztec emperor, accused the Institutional Revolutionary party (PRI) of abandoning its revolutionary principles. He organized a new "revolutionary" opposition to challenge the domination of Mexican politics by the PRI, which had won every presidential election since 1929.